Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-19 | 80/80-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.17 (664.6) | 26.04 (661.4) | -0.13 (-3.2) -0.5% |
| Width inches (mm) | 5.12 (130) | 3.15 (80) | -1.97 (-50) -38.5% |
| Circum. inches (mm) | 82.2 (2087.9) | 81.81 (2077.85) | -0.4 (-10.05) -0.5% |
| Sidewall Height inches (mm) | 3.58 (91) | 2.52 (64) | -1.06 (-27) -29.7% |
| Revolutions per mile (km) | 770.79 (478.95) | 774.52 (481.27) | 3.73 (2.32) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.03 km/h) |
| 25 mph (40.23 km/h) | 24.88 mph (40.04 km/h) |
| 30 mph (48.28 km/h) | 29.86 mph (48.05 km/h) |
| 35 mph (56.33 km/h) | 34.83 mph (56.06 km/h) |
| 40 mph (64.37 km/h) | 39.81 mph (64.06 km/h) |
| 45 mph (72.42 km/h) | 44.78 mph (72.07 km/h) |
| 50 mph (80.47 km/h) | 49.76 mph (80.08 km/h) |
| 55 mph (88.51 km/h) | 54.74 mph (88.09 km/h) |
| 60 mph (96.56 km/h) | 59.71 mph (96.1 km/h) |
| 65 mph (104.61 km/h) | 64.69 mph (104.1 km/h) |
| 70 mph (112.65 km/h) | 69.66 mph (112.11 km/h) |
| 75 mph (120.7 km/h) | 74.64 mph (120.12 km/h) |
| 80 mph (128.75 km/h) | 79.61 mph (128.13 km/h) |
| 85 mph (136.79 km/h) | 84.59 mph (136.14 km/h) |
| 90 mph (144.84 km/h) | 89.57 mph (144.14 km/h) |
| 95 mph (152.89 km/h) | 94.54 mph (152.15 km/h) |
| 100 mph (160.93 km/h) | 99.52 mph (160.16 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | 2290 | 2466 | 2575 | 2692 | 2776 | 2868 | 2977 | 3128 | 3279 | 3447 | 3581 | 3825 | 4093 | 4303 | 4437 | 4512 | 4789 | 5175 | 6014 |
Better Fuel Economy Factory Ratios Increased Power
